

body{
    height: 100%;
    margin:0;
    /* position: relative; */
    
}
a{
    /* color: silver; */
    text-decoration:none;
    display: flex;
    /* align-items: center; */
    justify-content: center;
    font-size: 30px;
    /* text-shadow: 5px 5px 2px #ffffff; */
}
a:hover{
    color:blue;
}
/* a:visited{
    color: blue;
    text-decoration: overline;
} */
#bg{
    width: 100%;
    height: 100%;
    background-image: url(caodi.png);
    background-size: 100% 100%;
    /* display: flex; */
}
#qq{

    width: 800px;
    height: 150px;
    border: 1px solid red;
    display: flex;
    justify-content: center;
    margin: 80px auto;
    box-shadow: 3px 3px 3px rgb(4, 65, 80);
}
#qq:hover{
    color: slateblue;
}
#ww{
    display: flex;
    justify-content: center;
    font-size: 30px;
}
#f1{
    width: 26%;
    left: 20.8%;
    top: 35%;
}
#f2{
    width: 15%;
    left: 43.7%;
    top: 71%;
}
#f3{
    width: 20%;
    left: 55.7%;
    top: 58%;
}
.fc{
    position: absolute;


    animation-name: spin;
    animation-duration: 10s;
    animation-iteration-count: infinite;
    animation-timing-function: linear;

}
@keyframes spin{
    0%{
        transform: rotate(0);
    }
    100%{
        transform: rotate(360deg);
    }
}

/* hover表示鼠标悬停在元素上是触发的效果 */
#f1:hover{
    animation-duration: 1s;
}
#f2:hover{
    /* 暂停 */
    animation-play-state: paused;
}
/* active鼠标左键按下时的状态 */
#f3:active{
    /* 动画方向 */
    animation-direction: alternate-reverse
}